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# 

# LSST Data Management System 

# Copyright 2008-2017 AURA/LSST. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

 

from contextlib import contextmanager 

import unittest 

 

import lsst.geom 

import lsst.daf.base 

import lsst.meas.base 

import lsst.utils.tests 

 

from lsst.meas.base.tests import (AlgorithmTestCase, CentroidTransformTestCase, 

SingleFramePluginTransformSetupHelper, ForcedPluginTransformSetupHelper) 

 

 

@contextmanager 

def onlyLogFatal(log): 

""" 

For the duration of the context, only log FATAL errors. 

 

This is convenient when testing algorithms under failure conditions: we 

want to be able to check that they have set appropriate flags without 

spewing alarming & confusing error messages to the console. 

""" 

oldLevel = log.getLevel() 

log.setLevel(log.FATAL) 

try: 

yield 

finally: 

log.setLevel(oldLevel) 

 

 

class SingleFramePeakCentroidTestCase(AlgorithmTestCase, lsst.utils.tests.TestCase): 

 

def setUp(self): 

self.center = lsst.geom.Point2D(50.1, 49.8) 

self.bbox = lsst.geom.Box2I(lsst.geom.Point2I(-20, -30), 

lsst.geom.Extent2I(140, 160)) 

self.dataset = lsst.meas.base.tests.TestDataset(self.bbox) 

self.dataset.addSource(1000000.0, self.center) 

self.task = self.makeSingleFrameMeasurementTask("base_PeakCentroid") 

self.exposure, self.catalog = self.dataset.realize(10.0, self.task.schema, randomSeed=0) 

 

def tearDown(self): 

del self.center 

del self.bbox 

del self.dataset 

del self.task 

del self.exposure 

del self.catalog 

 

def testSingleFramePlugin(self): 

"""Check that we recover the correct location of the centroid.""" 

self.task.run(self.catalog, self.exposure) 

x = self.catalog[0].get("base_PeakCentroid_x") 

y = self.catalog[0].get("base_PeakCentroid_y") 

self.assertFalse(self.catalog[0].get("base_PeakCentroid_flag")) 

self.assertFloatsAlmostEqual(x, self.center.getX(), atol=None, rtol=.02) 

self.assertFloatsAlmostEqual(y, self.center.getY(), atol=None, rtol=.02) 

 

def testFlags(self): 

""" 

When it is impossible to measure the centroid -- in this case, because 

we have removed the Peaks from the SourceRecord -- the centroider 

should set a failure flag. 

""" 

self.catalog[0].getFootprint().getPeaks().clear() 

# The decorator suppresses alarming but expected errors on the console. 

with onlyLogFatal(self.task.log): 

self.task.run(self.catalog, self.exposure) 

self.assertTrue(self.catalog[0].get("base_PeakCentroid_flag")) 

 

 

class SingleFramePeakCentroidTransformTestCase(CentroidTransformTestCase, 

SingleFramePluginTransformSetupHelper, 

lsst.utils.tests.TestCase): 

 

class SingleFramePeakCentroidPluginFactory: 

""" 

Helper class to sub in an empty PropertyList as the final argument to 

lsst.meas.base.SingleFramePeakCentroidPlugin. 

""" 

 

def __call__(self, control, name, inputSchema): 

return lsst.meas.base.SingleFramePeakCentroidPlugin(control, name, inputSchema, 

lsst.daf.base.PropertyList()) 

controlClass = lsst.meas.base.SingleFramePeakCentroidConfig 

algorithmClass = SingleFramePeakCentroidPluginFactory() 

transformClass = lsst.meas.base.SimpleCentroidTransform 

flagNames = () 

singleFramePlugins = ("base_PeakCentroid",) 

 

 

class ForcedPeakCentroidTransformTestCase(CentroidTransformTestCase, 

ForcedPluginTransformSetupHelper, 

lsst.utils.tests.TestCase): 

controlClass = lsst.meas.base.ForcedPeakCentroidConfig 

algorithmClass = lsst.meas.base.ForcedPeakCentroidPlugin 

transformClass = lsst.meas.base.SimpleCentroidTransform 

flagNames = () 

forcedPlugins = ("base_PeakCentroid",) 

 

 

class TestMemory(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

131 ↛ 132line 131 didn't jump to line 132, because the condition on line 131 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()